How can I access the Hibernate mapping of my model to find out the column name of a property?
The column name is not specified in the mapping so Hibernate generates it automatically - I would like to create a 开发者_开发问答native SQL statement including this column name.
Thanks to Jherico I found out how to do that:
((Column) sessionFactoryBean.getConfiguration().getClassMapping(Person.class.getName())
.getProperty("myProperty").getColumnIterator().next()).getName();
((AbstractEntityPersister) sessionFactory.getClassMetadata(o.getClass()))
.getPropertyColumnNames(property)[0];
You have to have access to the Hibernate Configuration object.
This will retrieve one-level composites and normal property mappings:
String columnName(String name) {
PersistentClass mapping = configuration.getClassMapping(ExtendedPerson.class.getName());
Property property = mapping.getProperty(name);
if(property.isComposite()){
Component comp = (Component) property.getValue();
property = comp.getProperty(StringHelper.unroot(name));
assert ! property.isComposite(); //go only one level down
}
Iterator<?> columnIterator = property.getColumnIterator();
Column col = (Column) columnIterator.next();
assert ! columnIterator.hasNext();
return col.getName();
}
精彩评论